CN101116300A - Communicating non-coherent detectable signal in broadband wireless access system - Google Patents

Abstract

The present invention relates to allocating a radio resource in a wireless communication system utilizing orthogonal frequency division multiplexing (OFDM). Preferably, the present invention comprises receiving in a mobile station data associated with a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers associated with representing at least part of an n-bit data payload, and a second set of subcarriers associated with representing at least part of a non-pilot m-bit data payload wherein each subcarrier carries a modulated data, and the first and the second set of subcarriers are exclusive to each other, and transmitting the uplink channel from the mobile station to the base station.

Description

Communicating non-coherent detectable signals in a broadband wireless access system

Technical Field

The present invention relates to broadband wireless access systems, and more particularly, to communicating non-coherent detectable signals for use in Orthogonal Frequency Division Multiplexing (OFDM) access systems.

Background

In order to allow multiple users to simultaneously use limited radio resources, a multiplexing scheme is required. The multiplexing scheme divides a single line or transmission path into a plurality of channels capable of simultaneously transmitting/receiving dedicated individual independent signals. There are various multiplexing schemes such as a Frequency Division Multiplexing (FDM) scheme for dividing a single line into a plurality of frequency bands and performing signal multiplexing, and a Time Division Multiplexing (TDM) scheme for dividing a single line into a plurality of very short time intervals and performing signal multiplexing.

Currently, due to the increase in demand for multimedia data in mobile communication, a multiplexing method for efficiently transmitting a large amount of data is required. One representative multiplexing method is an Orthogonal Frequency Division Multiplexing (OFDM) scheme.

The OFDM scheme represents a digital modulation scheme capable of improving a transmission rate per bandwidth and preventing generation of multipath interference. The OFDM scheme is characterized as a multi-subcarrier modulation scheme using a plurality of subcarriers, wherein the subcarriers are orthogonal to each other. Therefore, although frequency components of the respective subcarriers overlap with each other, the OFDM scheme has no problem. The OFDM scheme can perform multiplexing of more subcarriers than a conventional Frequency Division Multiplexing (FDM) scheme. Therefore, high frequency use efficiency is achieved.

Mobile communication systems based on the above-mentioned OFDM scheme currently use various multiple access schemes capable of allocating radio resources to a plurality of users, such as an OFDM-FDMA (OFDMA) scheme, an OFDM-TDMA scheme, and an OFDM-CDMA scheme, etc. In particular, the OFDMA (orthogonal frequency division multiple access) scheme allocates some parts of all subcarriers to a single user so that it can accommodate a plurality of users.

Fig. 1 illustrates a method for allocating radio resources according to the related art. Referring to fig. 1, a broadband wireless access system includes the specific structure of fig. 1 as a basic unit for allocating OFDMA uplink radio resources. This particular structure shown in fig. 1 is called a tile structure. In the case of the above-mentioned tile structure, data of a Channel Quality Indication Channel (CQICH) or data of an acknowledgement channel (ACKCH) is transmitted via a plurality of data subcarriers 102, 103, 105, 106, 107, 108, 110, and 111. The pilot channel is transmitted via pilot subcarriers 101, 104, 109, and 112. Each subcarrier transmitted via a tile is referred to as a constituent unit of the tile.

Disclosure of Invention

The present invention is directed to communicating non-coherent detectable signals for use in Orthogonal Frequency Division Multiplexing (OFDM) access systems.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, the present invention is embodied as a method of allocating radio resources in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), the method comprising: receiving, in a mobile station, data relating to a radio resource allocation map (allocation map) from a base station, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers relating to at least a part of a payload representing n-bit data and a second set of subcarriers relating to at least a part of a payload representing non-pilot m-bit data, wherein each subcarrier carries modulated data and the first and second sets of subcarriers are mutually exclusive; and transmitting an uplink channel from the mobile station to the base station.

Preferably, the uplink channel comprises a primary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

Preferably, the uplink channel further comprises a secondary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

In one aspect of the invention, information regarding the use of one of the first and second sets of subcarriers is received in the mobile station using a normal map information element.

In another aspect of the present invention, information related to using one of the first and second groups of subcarriers is received in a mobile station using a HARQ map (HARQ map) information element.

Preferably, the first group of sub-carriers is associated with representing at least a portion of a 6-bit data payload. Preferably, the second group of sub-carriers is associated with representing at least a portion of a 4-bit data payload.

In yet another aspect of the present invention, the uplink channel is associated with transmitting one of channel quality information, antenna selection options, and a precoding matrix codebook.

Preferably, the uplink channel is related to transmitting one of fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix information and per data stream power control.

Preferably, the use of the second set of sub-carriers for transmitting at least part of the m-bit data payload is requested by one of the base station or the mobile station.

Preferably, the six OFDM tiles comprise one OFDM slot for representing a 4-bit data payload, wherein the 4-bit data payload is represented as follows:

4 bit payload	Vector index of each tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5)	4 bit payload	Vector index of each tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5)
				0b0000	a，a，a，b，b，b	0b1000	a，a，b，d，c，c
0b0001	b，b，b，a，a，a	0b1001	b，d，c，c，d，b
				0b0010	c，c，c，d，d，d	0b1010	c，c，d，b，a，a
0b0011	d d d，c，c，c	0b1011	d，d，b，a，b，b
				0b0100	a，b，c，d，a，b	0b1100	a，a，d，c，a，d
0b0101	b，c，d，a，b，d	0b1101	b，c，a，c，c，a
				0b0110	c，d，a，b，c，d	0b1110	c，b，d，d，b，c
0b0111	d，a，b，c，d，a	0b1111	d，c，c，b，b，c

Wherein

Vector index	M n，4m ，M n，4m+1 ，M n，4m+2 ，M n，4m+3
		A	P0，P0，P0，P0
B	P0，P2，P0，P2
		C	P0，P1，P2，P3
D	P1，P0，P3，P2

According to another embodiment of the present invention, a method of allocating radio resources in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), comprises: transmitting data relating to a radio resource allocation map to a mobile station, wherein the radio allocation map comprises control parameters for receiving an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers relating to at least a portion of an m-bit data payload representing n-bits and a second set of subcarriers relating to at least a portion of an m-bit data payload representing no pilot, wherein each subcarrier carries modulated data and the first and second sets of subcarriers are mutually exclusive; and receiving an uplink channel from the mobile station.

According to another embodiment of the present invention, a mobile communication device for allocating radio resources in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), comprises: a receiver for receiving data relating to a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first group of subcarriers relating to at least a part of a payload representing n-bit data and a second group of subcarriers relating to at least a part of a payload representing m-bit data which is non-pilot, wherein each subcarrier carries modulated data and the first and second groups of subcarriers are mutually exclusive; and a transmitter for transmitting the uplink channel from the mobile communication device to the base station.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. Features, elements, and aspects of the invention that are referenced by the same numerals in different figures represent the same, equivalent, or similar features, elements, or aspects in accordance with one or more embodiments.

Fig. 1 illustrates a method of allocating radio resources according to the related art.

Fig. 2 illustrates a method for allocating a CQICH (channel quality indication channel) region and an ACKCH (acknowledgement channel) region in an OFDM uplink according to an embodiment of the present invention.

Fig. 3 illustrates a tile structure when a new signal is transmitted using subcarriers which have transmitted pilot signals according to one embodiment of the present invention.

Fig. 4 illustrates a method for obtaining a secondary ACKCH from a CQICH tile structure according to one embodiment of the present invention.

FIG. 5 illustrates a method for obtaining an auxiliary ACKCH from two ACKCH tiles according to one embodiment of the present invention.

Fig. 6 illustrates a method for obtaining an auxiliary CQICH from two CQICH tiling structures according to one embodiment of the present invention.

Fig. 7 illustrates a method for obtaining an auxiliary CQICH from four ACKCH tiles according to one embodiment of the present invention.

Fig. 8 illustrates a tiling structure for use with a method for allocating codewords using additional subcarriers according to one embodiment of the invention.

Fig. 9A and 9B illustrate the structure of a transmitter unit and a receiver unit of a mobile communication device according to one embodiment of the present invention.

Detailed Description

The present invention relates to allocating radio resources in a wireless communication system utilizing Orthogonal Frequency Division Multiplexing (OFDM).

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

Preferably, the present invention is applicable to a broadband wireless access system, such as the system disclosed in IEEE 802.16 e. However, it is contemplated that the present invention may be used in other types of wireless access systems.

Typically, channel estimation is performed on the data subcarriers based on the pilot subcarriers, so that a coherent detection scheme is used for the data subcarriers. However, the ACKCH or CQICH may use a non-coherent detection scheme without performing channel estimation. Meanwhile, the ACKCH or CQICH uses the orthogonal codeword to perform the non-coherent detection scheme.

Table 1 below exemplarily shows codewords for modulating ACKCH subcarriers when 1-bit ACK information is provided.

[ Table 1]

ACK1 bit code element	Vector of each tileIndex Tiling (0), tiling (1), tiling (2)
		0	0，0，0
1	4，7，2

Table 2 below exemplarily shows codewords for modulating CQICH subcarriers when 6-bit CQI information is provided.

[ Table 2]

6 bit payload		Fast feedback vector index per tile Tiling (0), tiling (1),. So, tiling (5)
				0b000000		0，0，0，0，0，0
0b000001		1，1，1，1，1，1
				0b000010		2，2，2，2，2，2
0b000011		3，3，3，3，3，3
				. . . .		. . . .

Table 3 below exemplarily shows codewords for modulating CQICH subcarriers when 5-bit CQI information is provided.

[ Table 3]

5 bit payload		Fast feedback vector index per tile Tiling (0), tiling (1),.. Multidot.
				0b00000		0，0，0，0，0
0b00001		1，1，1，1，1
				0b00010		2，2，2，2，2
0b00011		3，3，3，3，3
				. . . .		. . . .

Table 4 below exemplarily shows codewords for modulating CQICH subcarriers when 4-bit CQI information is provided.

[ Table 4]

4 bit payload		Fast feedback vector for each tileQuantity index Tiling (0), tiling (1),.. Multidot.
				0b0000		0，0，0，0，0，0
0b0001		1，1，1，1，1，1
				0b0010		2，2，2，2，2，2
0b0011		3，3，3，3，3，3
				. . . .		. . . .

Referring to table 4, a vector for each tile includes 8 Quadrature Phase Shift Keying (QPSK) symbols so that a signal can be transmitted via 8 data subcarriers.

[ Table 5]

Vector index	M n，m8 ，M n，8m+1 ，...，M n，8m+7
		0	P0，P1，P2，P3，P0，P1，P2，P3
1	P0，P3，P2，P1，P0，P3，P2，P1
		2	P0，P0，P1，P1，P2，P2，P3，P3
3	P0，P0，P3，P3，P2，P2，P1，P1
		4-	P0，P0，P0，P0，P0，P0，P0，P0，
5	P0，P2，P0，P2，P0，P2，P0，P2，
		6	P0，P2，P0，P2，P2，P0，P2，P0
7	P0，P2，P2，P0，P2，P0，P0，P2

Referring to table 5, P0, P1, P2, and P3 are represented by the following formula 1:

[ equation 1]

One sub-channel comprises 6 tiles. The CQICH may use one subchannel and the ACKCH may use half of the subchannel. In other words, the CQICH may use 6 tiles, and the ACKCH may use 3 tiles.

Fig. 2 illustrates a method for allocating a CQICH (channel quality indication channel) region and an ACKCH (acknowledgement channel) region in an OFDM uplink according to an embodiment of the present invention. Referring to fig. 2, some areas of a two-dimensional map of an uplink are pre-allocated to an ACKCH dedicated area 201, and the remaining areas other than the above-mentioned areas are pre-allocated to a CQICH dedicated area 202.

Each subchannel is allocated to the ACKCH dedicated region 201 and the CQICH dedicated region 202 so that a specific Mobile Subscriber Station (MSS) can use the ACKCH dedicated region 201 and the CQICH dedicated region 202. Referring to fig. 2, MSS #1 may be allocated to ACK #1, MSS #2 may be allocated to ACK #2, MSS #8 may be allocated to ACK #8, MSS #9 may be allocated to CQICH #1, MSS #10 may be allocated to CQICH #2 and CQICH #3, and MSS #11 may be allocated to CQICH #4.

If the base station uses a non-coherent detection scheme, pilot subcarriers need not be used. In this case, it is unnecessary to use 4 pilot subcarriers allocated to each tile, and radio resources for uplink and transmission power of the terminal are unnecessarily consumed.

Accordingly, new information is loaded on subcarriers allocated to pilot channels and then transmitted to CQICH and ACKCH tiles, so that specific information based on a non-coherent detection scheme in the same manner as in CQICH or ACKCH can be transmitted using conventional subcarriers equipped with pilot signals.

Fig. 3 illustrates a tile structure for when a new signal is transmitted using subcarriers to which pilot signals have been transmitted according to an embodiment of the present invention. Referring to fig. 3, a new signal may be transmitted using subcarriers 301, 304, 309, and 312. These subcarriers are used to transmit pilot signals.

As described above, if a new signal is loaded on subcarriers on which pilot signals have been transmitted in the tile structure for the CQICH and the ACKCH, the subcarriers on which each pilot signal has been transmitted are referred to as additional subcarriers. The secondary CQICH and the secondary ACKCH, which are different from the primary ACKCH and the primary CQICH, may be obtained if additional subcarriers formed of the packets of the unit tile structure are used.

Fig. 4 illustrates a method for obtaining an auxiliary ACKCH from a CQICH tile structure according to an embodiment of the present invention. Referring to fig. 4, one CQICH includes 6 tile units (1 subchannel), where 4 additional subcarriers can be obtained from each tile unit, so that a total of 24 additional subcarriers can be obtained from each CQICH. Meanwhile, the ACKCH or the auxiliary CQICH may include 3 tile units (1/2 of sub-channels), each of which includes 8 sub-carriers, so that one ACKCH or the auxiliary CQICH may be constructed using 24 sub-carriers. Accordingly, one ACKCH (i.e., a secondary ACKCH) or a secondary CQICH may be constructed using 24 additional subcarriers available from one CQICH.

Fig. 5 illustrates a method for obtaining a secondary ACKCH from two ACKCH tiles according to one embodiment of the present invention. Referring to fig. 5, one ACKCH may include 3 tile units, where 4 additional subcarriers may be obtained from each tile unit, so that a total of 24 additional subcarriers may be obtained from two ACKCHs. Meanwhile, one ACKCH may be constructed using 24 subcarriers, such that one ACKCH (i.e., an auxiliary ACKCH) may be constructed when additional subcarriers are obtained from a group including 2 ACKCHs, as shown in fig. 5.

Fig. 6 illustrates a method for obtaining a secondary CQICH from two CQICH tile structures according to one embodiment of the invention. Referring to fig. 6, each CQICH may include 6 tile units, wherein 4 additional subcarriers are obtained from each tile unit, so that a total of 48 additional subcarriers may be obtained from two CQICHs. Meanwhile, the CQICH may further include 6 tile units, where each tile unit includes 8 subcarriers, so that one CQICH may be constructed using 48 subcarriers. Therefore, one CQICH (i.e., auxiliary CQICH) may be constructed using 48 additional subcarriers available from two CQICHs.

Fig. 7 illustrates a method for obtaining an auxiliary CQICH from four ACKCH tiles according to an embodiment of the present invention. Referring to fig. 7, one ACKCH may include 3 tile units, where 4 additional subcarriers may be obtained from each tile unit, such that a total of 48 additional subcarriers may be obtained from 4 ACKCHs. Meanwhile, the CQICH may include 6 tile units, each of which includes 8 subcarriers, so that one CQICH may be constructed using 48 subcarriers. Accordingly, one CQICH (i.e., auxiliary CQICH) may be constructed using 48 additional subcarriers available from 4 ACKCHs.

Preferably, the following method may be applied to allocate codewords to subcarriers. According to the first preferred embodiment of the present invention, 12 tiles contained in one CQICH or two ACKCHs are grouped into 6 groups, each of which includes 2 tiles, and codewords can be allocated as shown in the following tables 6 to 9.

Table 6 below exemplarily shows a method for allocating codewords to modulate the secondary ACKCH subcarriers when 1-bit ACK information is provided.

[ Table 6]

Additional ACKCH 1 bit code element	Vector index of each tile (tile (0), tile (1)), (tile (2), tile (3)), (tile (4), tile (5))
		0	0，0，0
1	4，7，2

Table 7 below exemplarily shows a method for allocating codewords to modulate CQICH subcarriers when 6-bit CQI information is provided.

[ Table 7]

6 bit payload		Fast feedback vector index per tile (tiling (0), tiling (1)), (tiling (2), tiling (3)), ((tiling (4), tiling (5)), (tiling (10), tiling (11))
				0b000000		0，0，0，0，0
0b000001		1，1，1，1，1
				0b000010		2，2，2，2，2
0b000011		3，3，3，3，3
				. . . .		. . . .

Table 8 below exemplarily shows codewords for modulating CQICH subcarriers when 5-bit CQI information is provided.

[ Table 8]

5 bit effective Load(s)		Fast feedback vector index per tile (tile (0), tile (1)), (tile (2), tile (3)), ((tile (4), tile) (5) A., (tile (10), tile (11))
				0b00000		0，0，0，0，0
0b00001		1，1，1，1，1
				0b00010		2，2，2，2，2
0b00011		3，3，3，3，3
				. . . .		. . . .

Table 9 below exemplarily shows codewords for modulating CQICH subcarriers when 4-bit CQI information is provided.

[ Table 9]

4 bit payload		Fast feedback vector index per tile (tiling (0), tiling (1)), (tiling (2), tiling (3)), ((tiling (4)), Tiling (5)),. (tiling (10), tiling (11))
				0b00000		0，0，0，0，0，0
0b00001		1，1，1，1，1，1
				0b00010		2，2，2，2，2，2
0b00011		3，3，3，3，3，3
				. . . .		. . . .

Meanwhile, according to the second preferred embodiment of the present invention, codewords may be allocated to each of 12 tiles contained in one CQICH or two ACKCHs as shown in tables 10 to 11 below.

The following table 10 exemplarily shows a method for allocating codewords to modulate the secondary ACKCH subcarriers when 1-bit ACK information is provided.

[ Table 10]

Additional ACK 1 bit code element	Vector index of each tile Tiling (0), tiling (1), tiling (2), tiling (3), tiling (4), Flat-laying (5)
		0	a，a，a，a，a，a
1	b，b，b，b，b，b

[ Table 11]

Additional CQICH 6-bit, 5-bit and 4-bit payloads	Fast feedback vector index per tile Tiling (0), tiling (1), tiling (2), tiling (3), tiling (4) Flat (5), flat (10), flat (11)
		0b000000，0b00000，0b0000	a，a，a，a，a，a，a，a，a，a，a，a
0b000001，0b00001，0b0001	b，b，b，b，b，b，b，b，b，b，b，b
		0b000010，0b00001，0b0001	c，c，c，c，c，c，c，c，c，c，c，c
0b000011，0b00011，0b0011	d，d，d，d，d，d，d，d，d，d，d，d

The additional subcarriers applied to the tiles of the codeword allocation shown in table 11 are depicted in fig. 8.

Fig. 8 illustrates a tiling structure for use with a method for allocating codewords using additional subcarriers according to one embodiment of the invention.

Referring to fig. 8 and table 12 below, a vector allocated to each tile includes 4 modulation symbols in order to perform signal transmission via 4 additional subcarriers.

[ Table 12]

Vector index	M n，4m ，M n，4m+1 ，M n，4m+2 ，M n，4m+3
		a	P0，P0，P0，P0
b	P0，P2，P0，P2
		c	P0，P1，P2，P3
d	P1，P0，P3，P2

The secondary ACKCH may be constructed using 24 subcarriers allocated to a pilot channel. The method of constituting ACKCH using 24 pilot subcarriers may be implemented in a different method from the exemplary method shown in fig. 9-10 by means of additional subcarriers.

The secondary ACKCH may use 3 tile configurations. Table 13 below exemplarily shows the codewords available for the above-mentioned case, where the secondary ACKCH includes 3 tiles.

[ Table 13]

Auxiliary ACK1 bit symbol	Vector index of each tile Tiling (0), tiling (1), tiling (2)
		0	a，a，a
1	b，b，b

The auxiliary CQICH may be constructed using 48 pilot subcarriers. The method of constituting ACKCH using 48 pilot subcarriers may be implemented in a different method from the exemplary method shown in fig. 6-7 by means of additional subcarriers.

The auxiliary CQICH may be configured using 6 tiles. Table 14 below exemplarily shows codewords that may be used for the above-described scenario in which the auxiliary CQICH includes 6 tiles.

[ Table 14]

Auxiliary CQICH 4 bit payload	Vector index of each tile Tiling (0), tiling (1), tiling (2) -tiling (3), tiling (4), Flat tile (5)	Auxiliary CQICH 4 bit payload	Vector index of each tile Tiling (0), tiling (1), tiling (2) -tiling (3), tiling (4), Flat-laying (5)
				0b0000	a，a，a，b，b，b	0b1000	a，a，b，d，c，c
0b0001	b，b，b，a，a，a	0b1001	b，d，c，c，d，b
				0b0010	c，c，c，d，d，d	0b1010	c，c，d，b，a，a
0b0011	d，d，d，c，c，c	0b1011	d，d，b，a，b，b
				0b0100	a，b，c，d，a，b	0b1100	a，a，d，c，a，d
0b0101	b，c，d，a，b，d	0b1101	b，c，a，c，c，a
				0b0110	c，d，a，b，c，d	0b1110	c，b，d，d，b，c
0b0111	d，a，b，c，d，a	0b1111	d，c，c，b，b，c

Meanwhile, the new codeword may be constructed using Binary Phase Shift Keying (BPSK), as shown in table 15 below.

[ Table 15]

Vector index	M n，4m ，M n，4m+1 ，M n，4m+2 ，M n，4m+3
		a	1，1，1，1
b	1，-1，1，-1
		c	1，1，-1，-1
d	1，-1，-1，1

The base station may use the messages shown in table 16 below to inform the Mobile Subscriber Station (MSS) of information related to the secondary ACKCH.

[ Table 16]

Syntax of a sentence	Size (position)	Note that
			Compact_UL_MAP_IE(){
UL-MAP type	3	Type =7
			UL-MAP subtype	5	Subtype =3
Length of	4	Length of IE bytes
			Primary/secondary H-ARQ zone change indication	1	0= no regional variation 1= regional variation
If (main/auxiliary H-ARQ region change indication = 1) chinese
			OFDMA symbol offset	8	-
Sub-channel offset	8
			OFDMA symbol	8
Sub-channel of NO	8
			}
Reserved	3
			}

Referring to table 16, a "UL-MAP type" field and a "subtype" field are applicable for informing the MSS of message type information. In other words, the MSS can identify content information of a corresponding message by referring to the above-mentioned "UL-MAP type" and "subtype" fields. Meanwhile, the "length" field informs the MSS of size information of the entire message including the "length" field in bytes.

The "primary/secondary H-ARQ region indication" field has a value of 1 when a current frame has an H-ARQ region different from that of a previous frame or when another H-ARQ region exists in the same frame. The "OFDMA symbol offset" field informs the MSS "H-ARQ" region of the coordinates from the start of the uplink in units of symbols. The "subchannel offset" field informs the MSS of the coordinates of the "H-ARQ" region from the beginning of the uplink in units of subchannels. The "No. OFDMA symbol" field informs the MSS of size information occupied by the "H-ARQ" region on the uplink in symbol units. The 'No. subchannel' field informs the MSS of size information occupied by the 'H-ARQ' region on the uplink in units of subchannels.

Meanwhile, the base station may use the message shown in table 17 below to inform the MSS of information on the auxiliary CQICH.

[ Table 17]

Sentence structure	Size (position)	Note
			Compact_UL_MAP_IE(){
UL-MAP type	3	Type =7
			UL-MAP subtype	5	Subtype =3
Length of	4	Length of IE bytes
			Primary/secondary H-ARQ zone change indication	1	0= no regional variation
If (main/auxiliary H-ARQ region change indication = 1) chinese		1= regional variation
			OFDMA symbol offset	8
Sub-channel offset	8
			OFDMA symbol	8
Sub-channel of NO	8
			}
Reserved	3
			}

Referring to table 17, a "UL-MAP type" field and a "subtype" field are adapted to inform the MSS of message type information. In other words, the MSS can recognize message content information by referring to the above-mentioned "UL-MAP type and" subtype "fields. Meanwhile, the "length" field informs the MSS of size information of the entire message including the "length" field in bytes.

The "primary/secondary CQICH region indication" field has a value of 1 when the current frame has a CQICH region different from the previous frame or when another CQICH region exists in the same frame. The "OFDMA symbol offset" field informs the MSS of the coordinates of the "CQICH" region in symbol units at the beginning of the uplink. The "subchannel offset" field informs the MSS of a coordinate at which a "CQICH" region starts on the uplink in units of subchannels. Ofdma symbol ' field informs MSS of size information occupied by a ' CQICH ' region on the uplink in symbol units. The "No. subchannel" field informs the MSS of size information occupied by the "CQICH" region on the uplink in units of subchannels.

The information transmitted via the auxiliary CQICH according to the present invention may be used in different manners according to the feedback type. For example, if information related to a signal-to-noise ratio (SNR) is transmitted to a base station, a payload of the above-mentioned information may appear in a form described in the following equation 2:

[ formula 2]

Meanwhile, in case of a Multiple Input Multiple Output (MIMO) mode, a payload shown in the following table 18 may appear.

[ Table 18]

Value of	Description of the preferred embodiment
		0b0000	STTD and PUSC/FUSC permutation
0b0001	STTD and adjacent subcarrier permutation
		0b0010	SM and PUSC/FUSC permutation
0b0011	SM and adjacent subcarrier permutation
		0b0100	Closed loop SM and PUSC/FUSC permutation
0b0101	Closed loop SM and adjacent subcarrier permutation
		0b0110	Closed loop SM + beamforming and adjacent subcarrier permutation
0b0111-0b1111	Depending on whether antenna grouping, antenna selection, or simplified pre-coding is used A code matrix codebook, as explained in tables 296e, 296f, or 296 g.

Table 19 below exemplarily shows an antenna grouping method corresponding to a single value shown in table 18.

[ Table 19]

Value of	Description of the preferred embodiment
		0b0111	Antenna group A1 for Rate 1 For 3 antenna BS, see 8.4.8.3.4 For 4 antenna BS, see 8.4.8.3.5
0b1000	Antenna group A2 for Rate 1
		0b1001	Antenna group A3 for Rate 1
0b1010	Antenna group B1 for rate 2 For 3 antenna BS, see 8.4.8.3.4 For 4 antenna BS, see 8.4.8.3.5
		0b1011	Antenna group B2 for rate 2
0b1100	Antenna group B3 for rate 2
		0b1101	Antenna set for rate 2B 4 (for 4 antennas BS only)
0b1110	Antenna set for rate 2B 5 (for 4 antennas BS only)
		0b1111	Antenna set for rate 2B 6 (for 4 antennas BS only)

Table 20 below exemplarily shows an antenna selection method corresponding to a single value shown in table 18.

[ Table 20]

Value of	Description of the invention
		0b0111	Antenna selection option 0
0b1000	Antenna selection option 1
		0b1001	Antenna selection option 2
0b1010	Antenna selection option 3
		0b1011	Antenna selection option 4
0b1100	Antenna selection option 5
		0b1101	Antenna selection option 6
0b1110	Antenna selection option 7
		0b1111	Reservation

Table 21 below exemplarily shows a method of employing a simplified (reduced) precoding matrix codebook for corresponding to a single value shown in table 18.

[ Table 21]

Value of	Description of the invention
		0b0111	Reduced precoding matrix codebook entry 0
0b1000	Simplified precoding matrix codebook entry 1
		0b1001	Reduced precoding matrix codebook entry 2
0b1010	Simplified precoding matrix codebook entry 3
		0b1011	Simplified precoding matrix codebook entry 4
0b1100	Reduced precoding matrix codebook entry 5
		0b1101	Reduced precoding matrix codebook entry 6
0b1110	Reduced precoding matrix codebook entry 7
		0b1111	Reservation

The base station transmits information related to the above-mentioned feedback type information to the MSS via a "CQICH _ Enhanced _ Alloc _ IE" field.

Tables 22 and 23 below exemplarily show some parts of the "CQICH _ Enhanced _ Alloc _ IE" field including the above-mentioned feedback type information.

[ Table 22]

CQICH_Enhanced_Alloc_IE(){
			...	...	...
Type of feedback	3 position	0b000= fast DL measurement 0b001= MIMO mode selection/antenna grouping 0b010= mimo mode selection/antenna selection 0b011= MIMO mode selection/simplification codebook 0b100= quantized precoding weight feedback 0b101= index to precoding matrix in codebook 0b110= channel matrix information 0b111= per stream power control
			...	...	...

[ Table 23]

CQICH_Enhanced_Alloc_IE(){
			...	...	...
Type of feedback	3 position	0b000= fast DL measurement per day for 6 bit payload Wire grouping = fast DL measurement for 4 bit payload 0b001= fast DL measurement/day for 6 bit payload Line selection = MIMO mode/antenna grouping for 4 bit payload 0b010= fast DL measurement/reduction for 6 bit payload Change codebook = antenna selection/reduced codebook for 4 bit payload 0b011= quantized precoding weight feedback 0b100= precoding moment in codebookIndexing of arrays 0b101= channel matrix information 0b110= power per stream control 0b111= reserved

Meanwhile, if only information related to SNR is transmitted to the base station, a payload of information transmitted via the auxiliary CQICH according to the present invention may appear in the form described in the following equation 3:

[ formula 3]

Information on a feedback type capable of transmitting only SNR-related information to the base station is transmitted to the MSS via a "CQICH _ Enhanced _ Alloc _ IE" field.

The following table 24 exemplarily shows some parts of the "CQICH _ Enhanced _ Alloc _ IE" field including the above-mentioned feedback type information.

[ Table 24]

CQICH_Enhanced_Alloc_IE(){
			...	...	...
Type of feedback	3 position	0b000= fast DL measurement for 5-bit payload Antenna grouping = fast DL measurement for 4-bit payload 0b001= fast DL measurement for 6 bit payload Antenna selection = fast DL measurement for 4 bit payload 0b010= fast DL measurement for 6 bit payload Simplified codebook = fast DL measurement for 4 bit payload 0b011= quantized precoding weight feedback 0b100= index to precoding matrix in codebook 0b101= channel matrix information 0b110= power per stream control 0b111= reserved
			...	...	...

Meanwhile, information transmitted via the auxiliary CQICH may be used in different methods according to feedback types. In other words, the above-mentioned auxiliary CQICH may be used only for MIMO mode selection. If the auxiliary CQICH is used only for MIMO mode selection, the payload may appear in the form shown in table 25 below.

[ Table 25]

Value of	Description of the invention
		0b0000	STTD and PUSC/FUSC permutation
0b0001	STTD and adjacent subcarrier permutation
		0b0010	SM and PUSC/FUSC permutation
0b0011	SM and adjacent subcarrier permutation
		0b0100	Closed loop SM and PUSC/FUSC permutation
0b0101	Closed loop SM and adjacent subcarrier permutation
		0b0110	Closed loop SM + beamforming and adjacent subcarrier permutation
0b0111- 0b1111	Depending on whether antenna grouping, antenna selection or reduced precoding moments are used Array code books, as explained in tables 296e, 296f, or 296 g.

Table 26 below exemplarily shows an antenna grouping method corresponding to a single value shown in table 25.

[ Table 26]

Value of	Description of the invention
		0b0111	Antenna packet A1 for rate 1 For 3 antennas BS see 8.4.8.3.4 For 4 antenna BS, see 8.4.8.3.5
0b1000	Antenna group A2 for Rate 1
		0b1001	Antenna group A3 for Rate 1
0b1010	Antenna group B1 for rate 2 For 3 antennas BS see 8.4.8.3.4 For 4 antenna BS, see 8.4.8.3.5
		0b1011	Antenna group B2 for rate 2
0b1100	Antenna group B3 for rate 2
		0b1101	Antenna set for rate 2B 4 (for 4 antennas BS only)
0b1110	Antenna set for rate 2B 5 (for 4 antennas BS only)
		0b1111	Antenna set B6 for rate 2 (for 4 antennas BS only)

Table 27 below exemplarily shows an antenna grouping method corresponding to a single value shown in table 25.

[ Table 27]

Value of	Description of the preferred embodiment
		0b0111	Antenna selection option 0
0b1000	Antenna selection option 1
		0b1001	Antenna selection option 2
0b1010	Antenna selection option 3
		0b1011	Antenna selection option 4
0b1100	Antenna selection option 5
		0b1101	Antenna selection option 6
0b1110	Antenna selection option 7
		0b1111	Reservation

Table 28 below exemplarily shows a method of employing the reduced precoding matrix codebook corresponding to the individual values shown in table 25.

[ Table 28]

Value of	Description of the invention
		0b0111	Reduced precoding matrix codebook entry 0
0b1000	Simplified precoding matrix codebook entry 1
		0b1001	Reduced precoding matrix codebook entry 2
0b1010	Simplified precoding matrix codebook entry 3
		0b1011	Simplified precoding matrix codebook entry 4
0b1100	Reduced precoding matrix codebook entry 5
		0b1101	Reduced precoding matrix codebook entry 6
0b1110	Reduced precoding matrix codebook entry 7
		0b1111	Reserved

The base station transmits information related to the feedback type information mentioned above to the MSS via a "CQICH _ Enhanced _ Alloc _ IE" field.

The following table 29 exemplarily shows some parts of the "CQICH _ Enhanced _ Alloc _ IE" field including the above-mentioned feedback type information.

[ Table 29]

CQICH_Enhanced_Alloc_IE(){
			...	...	...
Type of feedback	3 position	0b000= fast DL measurement per day for 6 bit payload Wire grouping = MIMO mode/antenna grouping for 4-bit payload 0b001= fast DL measurement/day for 6 bit payload Line selection = MIMO mode/antenna selection for 4 bit payload 0b010= fast DL measurement/reduction for 6 bit payload Change codebook = MIMO mode/reduced codebook for 4-bit payload 0b011= quantized precoding weight feedback 0b100= index to precoding matrix in codebook 0b101= channel matrix information 0b110= power per stream control 0b111= reserve
			...	...	...

Although the use of the secondary fast feedback channel is requested by the BS to the MSS, the MSS has an option to request the use by sending a request message to the BS. As is apparent from the above description, when signal detection can be performed according to a non-coherent detection scheme, the method for receiving a non-coherently detectable signal in a broadband wireless access system according to the present invention can transmit other signals instead of a pilot signal, resulting in achieving improved transmission efficiency.

Although the present invention is described in the context of mobile communications, the present invention may also be used in any wireless communication system using mobile devices such as PDAs and portable computers equipped with wireless communication capabilities.

The preferred embodiments may be implemented as a method, apparatus or article of manufacture using standard programming and/or engineering techniques to produce software, a package, hardware, or any combination thereof. The term "article of manufacture" as used herein refers to code or logic implemented in hardware logic (e.g., an integrated circuit chip, field Programmable Gate Array (FPGA), application Specific Integrated Circuit (ASIC), etc.) or a computer readable medium (e.g., magnetic storage medium (e.g., hard disk drives, floppy disks, tape, etc.), optical storage (CD-ROMs, optical disks, etc.), volatile and non-volatile memory devices (e.g., EEPROMs, ROMs, PROMs, RAMs, DRAMs, SRAMs, firmware, programmable logic, etc.).

Code in the computer readable medium is accessed and executed by a processor. The code in which preferred embodiments are implemented may further be accessible through a transmission media or from a file server over a network. In such cases, the article of manufacture in which the code is implemented may comprise a transmission media, such as a network transmission line, wireless transmission media, signals propagating through space, radio waves, infrared signals, etc. Of course, those skilled in the art will recognize that many modifications may be made to this configuration without departing from the scope of the present invention, and that the article of manufacture may comprise any information bearing medium known in the art.

Fig. 9A and 9B illustrate the structure of a transmitter unit and a receiver unit of a mobile communication device according to one embodiment of the present invention. Referring to fig. 9A, the transmitter unit 500 preferably includes a processor 510 for processing signals to be transmitted. Prior to transmission, the data bits are channel encoded in a channel encoder 520, wherein redundant bits are added to the data bits. The data bits are then mapped to a signal such as QPSK or 16QAM in symbol mapper 530. The signal then undergoes subchannel modulation in subchannel modulator 540, where the signal is mapped to OFDMA subcarriers. Thereafter, a signal of an OFDM waveform is composed by combining several subcarriers through Inverse Fast Fourier Transform (IFFT) 550. Finally, the signal is filtered via a filter 560, converted to an analog signal by a digital-to-analog converter (DAC) 570, and transmitted to a receiver through an RF module 580.

Referring to fig. 9B, the structure of the receiver 600 of the present invention is similar to that of the transmitter 500, but the signal undergoes the reverse process. Preferably, the signal is received by the RF module 680 and then converted to a digital signal by the analog-to-digital converter 670 and filtered via the filter 660. Upon filtering, the signal undergoes a Fast Fourier Transform (FFT) 650 to form a waveform signal. The signal is then sub-channel demodulated in a sub-channel demodulator 640, symbol demapped by a symbol demapper 630, and channel decoded by a channel decoder 620 before being forwarded to a processor 610 for processing.

Preferably, when a user enters command information, such as a telephone number, into the mobile communication device, either by buttons of a keypad or by voice activation using a microphone, the processor 510 or 610 receives and processes the command information to perform an appropriate function, such as dialing a telephone number. Operational data may be obtained from the memory unit to perform a function. In addition, the processor 510 or 610 may display the command and operation information on a display for the user's reference and convenience.

The processor issues command information to the RF module 580 or 680 to initiate communication, e.g., sending wireless signals including voice communication data. The RF module includes a receiver and a transmitter to receive and transmit wireless signals. The antenna facilitates the transmission and reception of wireless signals. Upon receiving a radio signal, the RF module may forward and convert the signal to a baseband frequency for processing by the processor. The processed signal will be converted into audible or readable information, for example, output via a speaker.

The processor is adapted to store in the storage unit message history data of messages received from and messages transmitted to other users, receive a conditional request for message history data input by a user, process the conditional request to read message history data corresponding to the conditional request from the storage unit, and output the message history data to the display unit. The storage unit is adapted to store message history data of received messages and transmitted messages.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Industrial applicability

The present invention can be applied to a broadband wireless access system.

Claims (36)

1. A method of allocating radio resources in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), the method comprising:

receiving, in a mobile station, data relating to a radio resource allocation map from a base station, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers relating to at least a portion of an m-bit data payload representing n-bits, a second set of subcarriers relating to at least a portion of an m-bit data payload representing non-pilots, wherein each subcarrier carries modulated data, and the first and second sets of subcarriers are mutually exclusive; and

an uplink channel is transmitted from the mobile station to the base station.

2. The method of claim 1, wherein the uplink channel comprises a primary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

3. The method of claim 2, wherein the uplink channel further comprises a secondary tile, the secondary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

4. The method of claim 1, wherein information related to using one of the first and second groups of subcarriers is received in the mobile station using a normal map information element.

5. The method of claim 1, wherein information related to using one of the first and second groups of subcarriers is received in the mobile station using a HARQ map information element.

6. The method of claim 1, wherein the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload.

7. The method of claim 1, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.

8. The method of claim 7, wherein the uplink channel is related to one of a matrix codebook transmitting channel quality information, antenna selection options and precoding.

9. The method of claim 8, wherein the uplink channel is related to one of transmitting fast downlink measurements, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix information and per stream power control.

10. The method of claim 1, wherein the use of the second set of subcarriers for transmitting at least a portion of the m-bit data payload is requested by one of a base station or a mobile station.

11. The method of claim 1, wherein six OFDM tiles comprise one OFDM slot for representing a 4-bit data payload.

12. The method of claim 11, wherein the 4-bit data payload is represented as follows:

4 bit payload Each tiled vector index Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5) 4 bit payload Vector index of each tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5) 0b0000 a，a，a，b，b，b 0b1000 a，a，b，d，c，c 0b0001 b，b，b，a，a，a 0b1001 b，d，c，c，d，b 0b0010 c，c，c，d，d，d 0b1010 c，c，d b，a，a 0b0011 d，d，d，c，c，c 0b1011 d，d，b，a，b，b 0b0100 a，b，c，d，a，b 0b1100 a，a，d，c，a，d 0b0101 b，c，d，a，b，d 0b1101 b，c，a，c，c，a 0b0110 c，d，a，b，c，d 0b1110 c，b，d，d，b，c 0b0111 d，a，b，c，d，a 0b1111 d，c，c，b，b，c

Wherein

Vector index M _n，4m ，M _n，4m+1 ，M _n，4m+2 ，M _n，4m+3 a P0，P0，P0，P0 b P0，P2，P0，P2 c P0，P1，P2，P3 d P1，P0，P3，P2

13. A method of allocating radio resources in a wireless communication system using Orthogonal Frequency Division Multiplexing (OFDM), the method comprising:

transmitting data relating to a radio resource allocation map to a mobile station, wherein the radio allocation map comprises control parameters for receiving an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers relating to at least a portion of an m-bit data payload representing n-bits, a second set of subcarriers relating to at least a portion of an m-bit data payload representing non-pilots, wherein each subcarrier carries modulated data, and the first and second sets of subcarriers are mutually exclusive; and

an uplink channel is received from a mobile station.

14. The method of claim 13, wherein the uplink channel comprises a primary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

15. The method of claim 14, wherein the uplink channel further comprises a secondary tile, the secondary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

16. The method of claim 13, wherein information related to using one of the first and second groups of subcarriers is transmitted to the mobile station using a normal map information element.

17. The method as claimed in claim 13, wherein information related to the use of one of the first and second groups of subcarriers is transmitted to the mobile station using a HARQ map information element.

18. The method of claim 13, wherein the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload.

19. The method of claim 13, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.

20. The method of claim 19, wherein the uplink channel is associated with one of reception channel quality information, antenna selection options, and a matrix codebook of precoding.

21. The method of claim 20, wherein the uplink channel is related to one of receiving fast downlink measurement, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix information and per stream power control.

22. The method of claim 13, wherein the use of the second set of subcarriers for receiving at least a portion of the m-bit data payload is requested by one of the base station or the mobile station.

23. The method of claim 1, wherein six OFDM tiles comprise one OFDM slot for representing a 4-bit data payload.

24. The method of claim 23, wherein the 4-bit data payload is represented as follows:

4 bit payload Vector index per tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5) 4 bit payload Vector index of each tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5) 0b0000 a，a，a，b，b，b 0b1000 a，a，b，d，c，c 0b0001 b，b，b，a，a，a 0b1001 b，d，c，c，d，b 0b0010 c，c，c，d，d，d 0b1010 c，c，d b，a，a 0b0011 d，d，d，c，c，c 0b1011 d，d，b，a，b，b 0b0100 a，b，c，d，a，b 0b1100 a，a，d，c，a，d 0b0101 b，c，d，a，b，d 0b1101 b，c，a，c，c，a 0b0110 c，d，a，b，c，d 0b1110 c，b，d，d，b，c 0b0111 d，a，b，c，d，a 0b1111 d，c，c，b，b，c

Wherein

Vector index M _n，4m ，M _n，4m+1 ，M _n，4m+2 ，M _n，4m+3 a P0，P0，P0，P0 b P0，P2，P0，P2 c P0，P 1，P2，P3 d P1，P0，P3，P2

25. A mobile communication device for allocating radio resources in a wireless communication system utilizing Orthogonal Frequency Division Multiplexing (OFDM), the mobile communication device comprising:

a processor configured to process data from a base station relating to a radio resource allocation map, wherein the radio allocation map comprises control parameters for transmitting an uplink channel, wherein the uplink channel comprises at least one OFDM tile comprising a first set of subcarriers relating to at least a portion of a data payload representing n bits, a second set of subcarriers relating to at least a portion of an m-bit data payload representing non-pilots, wherein each subcarrier carries modulated data, and the first and second sets of subcarriers are mutually exclusive; and

a transmitter module for transmitting an uplink channel from the mobile communication device to the base station.

26. The mobile communication device of claim 25, wherein the uplink channel comprises a primary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

27. The mobile communication device of claim 26, wherein the uplink channel further comprises a secondary tile, the secondary tile comprising:

where the X-axis represents the time domain and the Y-axis represents the frequency domain.

28. The mobile communication device of claim 25, wherein information related to using one of the first and second groups of subcarriers is received in the mobile communication device using a normal map information element.

29. The mobile communication device according to claim 25, wherein the information related to using one of the first and second groups of subcarriers is received in the mobile communication device using a HARQ map information element.

30. The mobile communication device of claim 25, wherein the first set of subcarriers is associated with representing at least a portion of a 6-bit data payload.

31. The mobile communication device of claim 25, wherein the second set of subcarriers is associated with representing at least a portion of a 4-bit data payload.

32. The mobile communication device of claim 25, wherein the uplink channel is associated with one of transmission channel quality information, antenna selection options, and a matrix codebook of precoding.

33. The mobile communication device of claim 32, wherein the uplink channel is related to one of transmitting fast downlink measurements, MIMO mode, antenna grouping, antenna selection, reduced codebook, quantized precoding weight feedback, index to precoding matrix in codebook, channel matrix information and per stream power control.

34. The mobile communication device of claim 25, wherein the use of the second set of subcarriers to transmit at least a portion of the m-bit data payload is requested by one of the base station or the mobile communication device.

35. The mobile communication device of claim 25, wherein the six OFDM tiles comprise one OFDM slot for representing a 4-bit data payload.

36. The mobile communication device according to claim 35, wherein the 4-bit data payload is represented as follows:

4 bit payload Vector index of each tile Tiling (0), tiling (1), tiling (2) -tiling (3), tiling (4), Flat-laying (5) 4 bit payload Vector index of each tile Tiling (0), tiling (1), tiling (2), Tiling (3), tiling (4), tiling (5) 0b0000 a，a，a，b，b，b 0b1000 a，a，b，d，c，c 0b0001 b，b，b，a，a，a 0b1001 b，d，c，c，d，b 0b0010 c，c，c，d，d，d 0b1010 c，c，d b，a，a 0b0011 d，d，d，c，c，c 0b1011 d，d，b，a，b，b 0b0100 a，b，c，d，a，b 0b1100 a，a，d，c，a，d 0b0101 b，c，d，a，b，d 0b1101 b，c，a，c，c，a 0b0110 c，d，a，b，c，d 0b1110 c，b，d，d，b，c 0b0111 d，a，b，c，d，a 0b1111 d，c，c，b，b，c

Wherein

Vector index M _n，4m ，M _n，4m+1 ，M _n，4m+2 ，M _n，4m+3 a P0，P0，P0，P0 b P0，P2，P0，P2 c P0，P1，P2，P3 d P1，P0，P3，P2

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